511-Piece Intelligent DIY Model Car Kit | 6-in-1 Metal and Plastic Construction Models (Ages 8+)Unlock the principles of mechanical assembly with the Intelligent DIY Model Car Kit (No. 58021). This extensive construction set, suitable for Ages 8 and up, contains a massive 511 pieces of both metal and plastic components, providing a rich, hands on engineering experience. This kit is part of the "Toys Series with Strong Sense for Playing" and is explicitly marketed as being "Useful for The Child's Study" as "It Studies While Happily Playing." Key